I'm trying to get location(latitude, longitude) from android application and insert into database using php then extract data within a 10m radius.
The Problem is, when I test the code using smartphone (local test is OK), data is not correctly inserted. Table 'usergps' has 3 columns (name, latitude, longitude) and after I test the code, ( , 0, 0) is inserted.
Can you check the code below? I added the java code.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_getgps);
public void onClick(View view) {
gps = new GpsActivity(getGpsValues.this);
//this is new part
Intent intent = getIntent();
// Receiving the Data from MainActivity
HashMap<String, String> user = db.getUserDetails();
String name = user.get("name");
String email = user.get("email");
if(gps.canGetLocation()){
double lat = gps.getLatitude();
double lon = gps.getLongitude();
sendGps(lat,lon,name);
}
HashMap<String, String> gps = db.getNumbers();
String num = gps.get("num");
} }
private void sendGps(final Double lat, final Double lon, final String name) {
// Tag used to cancel the request
String tag_string_req = "req_gps";
StringRequest strReq = new StringRequest(Method.POST,
AppConfig.URL_GPS, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "GPS Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error) {
// GPS successfully stored in MySQL
// Now store the GPS in sqlite
JSONObject gps = jObj.getJSONObject("gps");
Double lat = gps.getDouble("lat");
Double lon = gps.getDouble("lon");
String name = gps.getString("name");
// Inserting row in users table.
db.addGps(lat, lon, name);
} else {
// Error occurred in registration. Get the error
// message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
this part is getting data from php. this is another class.
/**
* Getting user data from database
* */
public HashMap<String, String> getUserDetails() {
HashMap<String, String> user = new HashMap<String, String>();
String selectQuery = "SELECT * FROM " + TABLE_LOGIN;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// Move to first row
cursor.moveToFirst();
if (cursor.getCount() > 0) {
user.put("name", cursor.getString(1));
user.put("email", cursor.getString(2));
user.put("uid", cursor.getString(3));
user.put("created_at", cursor.getString(4));
}
cursor.close();
db.close();
// return user
Log.d(TAG, "Fetching user from Sqlite: " + user.toString());
return user;
}
public HashMap<String, String> getNumbers() {
HashMap<String, String> gps = new HashMap<String, String>();
String selectQuery = "SELECT * FROM " + TABLE_GPS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// Move to first row
cursor.moveToFirst();
if (cursor.getCount() > 0) {
gps.put("num", cursor.getString(1));
}
cursor.close();
db.close();
// return user
Log.d(TAG, "Fetching user from Sqlite: " + gps.toString());
return gps;
}
and PHP code is here. Android php connection error? (+mysql)
I can't check error in logcat. I have to check this by using smartphone. Please check the code and let me know.
HashMap<String, String> params = new HashMap<String, String>();
params.put("lat", ""+lat);
params.put("lon", ""+lon);
params.put("name", name);
JsonObjectRequest strReq = new JsonObjectRequest(Request.Method.POST,
AppConfig.URL_GPS, new JSONObject(params), new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d(TAG, "GPS Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject();
boolean error = jObj.getBoolean("error");
if (!error) {
JSONObject gps = jObj.getJSONObject("gps");
String name = gps.getString("name");
Double lat = gps.getDouble("lat");
Double lon = gps.getDouble("lon");
// Inserting row in users table.
db.addGps(name, lat, lon);
...
in your:
private void sendGps(final Double lat, final Double lon, final String name)
method, you don't send the params (lat lon name) to your PHP backend. I'm not so familiar with PHP, but I suppose, as this params are not included on your POST, php uses default values: "" for String and 0 for Numbers.
to send data you need to change your Request from StringRequest to JsonObjectRequest
so your code look something like this:
HashMap<String, String> params = new HashMap<String, String>();
params.put("lat", ""+lat);
params.put("lon", ""+lon);
params.put("name", name);
JsonObjectRequest strReq = new JsonObjectRequest(
AppConfig.URL_GPS, new JSONObject(params), new Response.Listener<String>() {
be aware you need to change your response listener, because you get a json object response now.